Apparatus for post-processing an audio signal using a transient location detection

US11373666B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Sascha Disch · Bad Mergentheim, DE
• Christian Uhle · Nuremberg, DE
• Patrick Gampp · Erlangen, DE
• Daniel Richter · Radebeul, DE
• Oliver Hellmuth · Erlangen, DE
• Jürgen Herre · Buckenhof, DE
• Peter Prokein · Erlangen, DE
• Antonios Karampourniotis · Nuremberg, DE
• Julia Havenstein · Nuremberg, DE

Key dates

• Filing date: Sep 24, 2019
• Grant date: Jun 28, 2022
• Expiry date: Sep 24, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L2021/02082
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Apparatus for post-processing an audio signal, including: a converter for converting the audio signal into a time-frequency representation; a transient location estimator for estimating a location in time of a transient portion using the audio signal or the time-frequency representation; and a signal manipulator for manipulating the time-frequency representation, wherein the signal manipulator is configured to reduce or eliminate a pre-echo in the time-frequency representation at a location in time before the transient location or to perform a shaping of the time-frequency representation at the transient location to amplify an attack of the transient portion.